text: 
  namespace CGAL {
  
  /*!
  \ingroup PkgAlphaShapes3
  
  The class `Fixed_alpha_shape_vertex_base_3` is the default model for the concept 
  `FixedAlphaShapeVertex_3`. 
  
  \tparam Traits must provide the type for the points or the weighted points. 
  \tparam Vb must be a vertex base class and it is instantiated by default 
  with `Triangulation_vertex_base_3<Traits>`. 
  
  \cgalModels `FixedAlphaShapeVertex_3`
  
  */
  template< typename Traits, typename Vb >
  class Fixed_alpha_shape_vertex_base_3 : public Vb {
  public:
  
  /// @}
  
  }; /* end Fixed_alpha_shape_vertex_base_3 */
  } /* end namespace CGAL */
  